Home / 287-396.14-195

Finding the Fourth Proportional to 287, 396.14 and 195

Calculator

Solution

The fourth proportional to 287, 396.14 and 195 is: 269.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    287 : 396.14 = 195 : x
  2. Step 2: Convert to fraction form
    287/396.14 = 195/x
  3. Step 3: Cross multiply
    287x = 396.14 × 195
  4. Step 4: Simplify right side
    287x = 77,247.30
  5. Step 5: Solve for x
    x = 77,247.30/287
  6. Step 6: Final answer
    x = 269.15

Related Problems

Find fourth proportional to 143.50, 198.07 and 97.50
Half scale
Find fourth proportional to 574, 792.28 and 390
Double scale
Find fourth proportional to 288, 397.52 and 196
Similar ratio
Find fourth proportional to 430.50, 594.21 and 292.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.